Update 1/2/22: Cullen has been adopted.
From a shelter volunteer: I volunteer at my local animal shelter and one of the wonderful dogs there is Cullen. He is, best guess, a Labrador mix and he’s about 2 years old, maybe younger. He came in as a stray to our local animal control facility and the shelter I volunteer with pulled him. I currently have two deaf dogs and I know the love these dogs can give when given the chance. So, I wanted to give him the best chance at finding his furever family by teaching him some basic sign commands.